Improvement in combined latch and lock



i To all '1t-hom may concern.- `Be it known that I, GHARLES L. Denn, of Newark, in the county of Essex, and State of New Jersey,

1cnAnLnsL. D 'E'ArtbrNEWARK, NEW JERSEY.

Letters Patent o. 100,734, elated March 15, 1870.

\ IMPROVEMENT 1N con/nennen` LATCH AND-Loox.

The Schedule referred to in these Letters Patent and making part of the same have invented a new andnseful Combination of Knob and Door-Loek; and I do hereby declarefthat the fol lowing isa fnll, clear, and'exaet description of the same, reference beinghad to the accompanying drawings Vforming a partof these specifications, in which- Fignre 1 is alongitudinal bisection of myimprowement.

vFigure 2 shows atrend yiew ot' a door-knob. Figure 3 represents aneinside `view ot' a' doorllatch,

` bolt, andplock combined.

` spindle My iniention" consists m fa swinging bolt` acting against a sliding latch-bolt, for the purpose of locking ,the same, in combination with a series of tumblers and a hub, so that the sliding bolt may bevvoperated as a lat-ch or lock. v

loenablel others to make use of my invention, I-

" will proceed to describe the same.`

A in tig. 1 represents a key passingy through the center of knob B, at either end, through i cavity C, which` extends through the entire length of the spindie D. This key operates upon tnmblers within the lock, like any ordinary door or safe-key; can be inserted at either end of the knob, and'will permanently` secure the lock or knob-bolt when turned within the knob.` The key leanthen be taken out, and the door4 is secure, and cannot be opened on either side without the use o t" the key, thus loekingthe door so that no'4 ingress or egresscan be made through the door. The face vof the outer and inner knob is 'made concave, as shown by the dotted lines a a, so as to render'it more easy for the key toenter, thus allowing the key to be made shorter, so as to be more conveniently` carried.

`This knob B maybe made. of wood, glass,lor any kind of material, `is permanently secured to the spindie on the outer side, and on the inn'er side secured by means of a small screw, as shown at b, in iig. 2.

`Tl-lejlock is madereversible by simply taking ont small screw b, removingv the knob, drawing out the and by turning the lock over, inserting the spindle again, is made a right or left-hand lock, as required.' '.lhs'will always bring the small screw b on the inside of the door, leaving a solid spindle upon the outer side, with noscrew whatever in the spindles or by means of springs h h. lt. v projection t' slides into slot j, to hold the tumblers in their proper position while the bolt is unlocked. The f knob, rendering it impossible to remove the knob from the outer side.

d in fig. 3 represents the sliding latch-bolt, which is locked by means of the swinging lock-bolt F and the tumbler-s g g g. One or more tumblers can lbe used, as necessity requires. These tnmblers are thrown back by the key,and retained in their proper position When thrown back, the

key, closely fitting the tnmblers, throws the projecition t ont of the slot j, and ymoves the swinging bolt or bar F, so that'it does not operate against the lock or knob-bolt d'.' By turning the key, thetnmblers are? thrown out of slot j, and moves the swinging bolt F against the inner end of lock-bolt d.

K isa hub, having ears upon each side grasping the inner extreme end of lock-bolt d, closely fitting the slot in the spindle D, which can be turned either way, and the door opened when unlocked.

lis a lever,'kept in its position by means ofspiral spring f, operating against the bolt in order to throw it forward. Y t

The knob, with a square hole through its center, is

secured by a screw or rivet to the spind1e,, \'ithout leading or cementing by a metallic cap or sleeve.

The superiority of my device over ordinary'doorlocks can be readily seen. No key-hole is necessary, v

and consequently no escutcheons are required on either side of-'the door; cau be made smaller than ordinary door-latches and locks; are more easily attached to the door, and less expensive in manufacture 'than any otherdoor-latch and lock, where both are needed.

.I-lavingr thus fully described my invent-ion,

What I claim as new, and desire to secure by Letl The swinging boltF, tumblers g g g, Vsprings h h. h, slot j, lever b, acting on sliding bolt d, spiral spring j, and hub lo, when arranged, combined, and operated as herein described.

In testimony whereof I have signed my name to this specification in the presence of t-wo subscribing witnesses.

` CHARLES L. DEAN.

Witnesses; WM. E. BROOKE, FRANCIS Snowman. 

